18678135694 has 8 divisors (see below), whose sum is σ = 28018248048. Its totient is φ = 9338719680.

The previous prime is 18678135683. The next prime is 18678135701. The reversal of 18678135694 is 49653187681.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 100867 + ... + 218014.

It is an arithmetic number, because the mean of its divisors is an integer number (3502281006).

Almost surely, 2^18678135694 is an apocalyptic number.

18678135694 is a deficient number, since it is larger than the sum of its proper divisors (9340112354).

18678135694 is a wasteful number, since it uses less digits than its factorization.

18678135694 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 348170.

The product of its digits is 8709120, while the sum is 58.

The spelling of 18678135694 in words is "eighteen billion, six hundred seventy-eight million, one hundred thirty-five thousand, six hundred ninety-four".